What Families Need To Know About Postpartum Psychosis

A few weeks after a healthy delivery, a young mother became convinced her husband was having an affair. There was no affair. But her parents believed her. Her sister believed her. So did her therapist and, later, her lawyer. Everyone believed her because nothing about her looked like an illness. Only when the fear hardened into something stranger, and then frightening, did anyone suspect the truth: She was in the grip of postpartum psychosis — one of the rarest and most dangerous conditions in psychiatry, and one that most clinicians will never see in an entire career.

That gap between how devastating the illness is and how seldom it is recognized sits at the center of every high-profile postpartum psychosis case that reaches a courtroom. The Massachusetts prosecution of Lindsay Clancy has renewed a national conversation about how a new mother can allegedly seek help repeatedly and still slip through the cracks. Two decades earlier, the trial of Andrea Yates in Texas raised the same question. The purpose here is not to weigh guilt or innocence, but to explain a clinical reality: Postpartum psychosis is easy to miss, and understanding why is the first step toward catching it in time.

While postpartum psychosis symptoms and warning signs are very important, LifeStance Health examines a different question: Why does an illness this serious so often go unrecognized, even when a mother is already under a clinician’s care?

Postpartum psychosis affects an estimated 1 to 2 in every 1,000 deliveries, which makes it one of the least common conditions a mental health professional will encounter. Rarity is a core reason why the diagnosis may be missed.

Consider the arithmetic of a single clinician’s career. In more than four decades of this author’s psychiatric practice, only three cases of postpartum psychosis have knowingly presented, and each looked strikingly different from the others. One patient developed the belief that her husband was deceiving and “messing with” her mind. Another, seen in a New York hospital in 1988, arrived showing severe signs of psychosis and mania, insisting on a fabricated identity. But only later did the team learn she had recently given birth, and the postpartum origin of her illness was recognized well after admission. A third presented with manic symptoms and a conviction that her husband was looking “strange” and had somehow changed; she was diagnosed with bipolar mania and maintained on lithium for over a decade.

Three cases, three entirely different faces of the same illness. If an experienced psychiatrist sees the condition only a handful of times in a lifetime, a newer clinician — or a therapist, obstetrician or nurse practitioner who has never encountered it — may not recognize it.

Much of maternal mental health screening is built around depression since postpartum depression and anxiety are far more common after giving birth. But the tools designed to catch them are not designed to catch psychosis. A standard depression questionnaire asks about sadness, guilt, and loss of interest; it does not ask, for example, whether a mother believes her baby is in supernatural danger or if her partner has been replaced. A mother experiencing psychosis can also look calm and lucid between episodes, since the symptoms wax and wane.

The American College of Obstetricians and Gynecologists recommends routine perinatal screening for depression and anxiety using validated questionnaires, yet it does not call for universal screening aimed specifically at psychosis, largely because the condition is so rare. The result is a real blind spot: A mother experiencing psychosis who does not screen as depressed can pass through a well-run system without her actual illness ever being named. Rising concern about broader maternal mental health has sharpened attention on this gap, but the screening mismatch remains.

One of the most important clues is also one of the most overlooked. A 2016 review in the American Journal of Psychiatry describes postpartum psychosis as closely tied to the bipolar spectrum — essentially an atypical presentation of bipolar disorder triggered by childbirth, with symptoms that most often begin within the first two weeks after delivery. Individuals with bipolar disorder tend to respond to mood stabilizers such as lithium and to antipsychotic medication (when taken as prescribed) rather than to antidepressants alone.

This distinction has enormous practical weight. When the underlying illness is bipolar in nature, antidepressants on their own may not address the problem and can sometimes worsen symptoms. A postpartum patient cycling through multiple antidepressant trials without meaningful improvement is a signal that the diagnosis may be inaccurate. Medications are appropriate only when prescribed by a clinician and taken exactly as prescribed, and finding the right one is a careful process handled through medication management. A pattern of repeated medication changes without noted progress should prompt a fresh look at what is actually being treated.

There is a further trap. Because most women with postpartum depression recover within a few months, the bipolar connection can be hard to confirm in the moment. On the other hand, a smaller group of women in the postpartum stage does go on to develop classic bipolar disorder and need long-term treatment. The same illness can therefore look like a one-time crisis in one individual and a lifelong mood disorder in another.

Several forces line up to keep postpartum psychosis hidden.

The first is training. Although earlier editions of psychiatry’s diagnostic manual listed postpartum psychosis, it carries no standalone code in the current Diagnostic and Statistical Manual of Mental Disorders (DSM-5), or the U.S.’s mental health guidebook. As a result, U.S. textbooks, courses, and clinical training often give it little attention, and clinicians may never be taught to look for it. On the contrary, the World Health Organization International Classification of Diseases (ICD) and subscribing European nations do acknowledge postpartum psychosis.

The second is the illness itself. Individuals often have enough self-awareness during lucid periods to hide their most frightening thoughts, especially from authority figures, out of fear of hospitalization or losing custody of their children. The distressing or delusional thoughts that accompany postpartum psychosis are not the same as the fleeting, unwanted intrusive thoughts that many anxious new parents experience. A delusion feels completely true to the person living it, which is exactly why a new mother may not report it.

The third is disconnected care. A new mother may be seeing an obstetrician, a therapist, a prescriber, and sometimes an inpatient team, each holding a single puzzle piece. Cross-examination in the Clancy case highlighted exactly this danger: providers who were not comparing notes. When no one connects the fragments, the larger psychiatric picture may not come into focus, so a disjointed care model likely makes diagnosis more difficult.

Because the illness disguises itself so well, catching it depends less on a single test than on a thorough, deliberate evaluation. Here’s what a provider should consider:

• Rule it in, not out. Any unusual thinking or behavior in a woman who has recently given birth should raise postpartum psychosis as a possibility, even when she does not look depressed.
• Interview the family, not just the individual. Because mothers frequently conceal psychotic thoughts (out of fear), input from a spouse, parent, sibling, or friend is often what reveals the true picture. Experienced clinicians insist on speaking with those closest to her.
• Prioritize an in-person evaluation when someone is not improving. Subtle changes in affect, expression, and behavior are easier to read face-to-face than on a screen, and judicious in-person visits matter most precisely when an individual is doing poorly.
• Coordinate across providers. A connected, team-based approach and the idea behind a collaborative care model help ensure that a therapist, prescriber, and obstetrician are not working from partial views.

Families should never dismiss dramatic personality changes, unusual beliefs, paranoia, or a sudden loss of touch with reality in the weeks after a birth. Postpartum psychosis is a medical emergency, and it warrants urgent inpatient hospitalization, preferably in a dedicated mother-baby psychiatric unit. If symptoms like these appear, seek care immediately rather than waiting to see whether they pass. When there is any concern about a mother’s or infant’s safety, contact emergency services or go to the nearest emergency room.

The most hopeful part of this difficult subject is that the illness is often treatable once it is correctly identified. Getting to the right diagnosis and getting the right care is what allows that kind of improvement to reach the mothers who need it. If something does not feel right after giving birth, keep asking questions until the concern is fully addressed.

This story was published by LifeStance Health and reviewed and distributed by Stacker. Written by Robert Herman, MD.